have a soft spot for (someone or something)
To have a particular fondness or affection for someone or something, often for reasons that hard to understand or articulate. I've always had a soft spot for cheesy action films—there's just an earnest goofiness about them that I like. Despite how troublesome he could be, the teacher had a soft spot for Daniel.
have a soft spot for
be fond of or affectionate towards.have a soft ˈspot for somebody/something
(informal) particularly like somebody/something: I’ve always had a soft spot for my little cousin Clare.